Mold construction



2 Sheets-Sheet 1 w. UNDERwooD MOLD CONSTRUCTION Filed Deo. 14, 1927 /505 l, a 5/ v I i Jan. 29, 1929.

r fn n ru a a w. UNDERWooD MOLD 'CONSTRUCTION Jan. 29, 1929. 1,700,522

Filed De0.14, 1927 2 Sheets-Sheet 2 yao Patented Jan. 29, 1929. l'

UNiTEo I stares WESTERN UNDERWOOD, 0F SANTA MONICA, CALIFORNIA, .aSsiaNon To LALUX MANU- FACTURING' COMPANY,

FOR/NIA.. a p

OF Los ANGELES, CALIFORNIA, A CORPORATION OF OALT;

MOLD CONSTRUCTION.

Application led December 14, 1927.* Serial No. 239,913,-

' This invention has to do with a mold construction and it is a general object of the invention to provide an improved arrangement and 'construction of parts in a mold for use in forming monolithic or cementitious products.

Various cementitious or monolithic productsv are formed in molds and by processes which involve operating the'molds in various manners. For purpose of example, I will refer to molds of the type used in the formation of monolithic columns or posts.

Molds of this type are'lhandle'd in various manners following various methods of manufacture; for instance, in some cases they arev revolved for the purpose of properly vpacking the plastic material in them. In the case of the process set forth in my' co-pending application, entitledMethod of Yforming hollow, reinforced posts, Serial No. 239,914, filed'on even date 'herewith,the molds are vibrated and also rotated. y y

It is a primary object of this invention to provide a mold suitable for the formation of Aa ymonolithic post or columnv having a core which provides the post with a central longitudinal opening of a definite size.

Another object of thisinvention is to'provide a simple, practical and effective construction and arrangement of parts :whereby a core is accurately and effectively supported within a mold. l

A further object of the invention is to provide a structure of the character just mentioned which allows the material to be molded, to be conveniently filled or packed into the mold while the core is definitely and positively held in place in the mold.

It is another vobject ofthis invention to provide an effective and improved means of supporting a reinforcement within a mold of the type mentioned whereby the reinforcenient is definitely and accurately positioned in the iinished product.

It is another object, of this invention to provide a mold construction whereby a longitudinal reinforcement is held in the mold so that it is accurately positionedin the finished product and is free of false or induced strains.

A further object ofthis invention is to provide Ameans whereby the mold can be handled conveniently and with a minimum of It is another object of the invention to provi-de asimple, practical and eiective construction whereby the mold is adapted to machines or apparatus that may beused in handling lit during finished product. Y Y

the course of forming the The various vobjects and featuresk of inventi ony will f `be best vand morer fully understood from the following descriotionof atypical preferred form and applicationof the invention throughout which description I refer to the accompanying ldrawings inV which:

Fig; l is a longitudinal, detailed vsectional l n view ofthe construction provided by my invention showing it in course of beingl assembled to receive the material to be molded; Fig. 2 is a view similar to Fig. l, showing the lmold completely assembled and lled;

.'Fig. 3 is an enlarged, detailed sectional view 'il i' taken at one end of the constructionshowing the manner in which I attach the'freinforcement to the body of the mold and apply the core carrying plate Vto the body of the mold;

F ig. l is an enlarged, detailed transverse `sectional view ofthe construction, being a .view-,taken as indicated Vby line 4--4 on Fig.2;

Fig. 5 is an enlarged end elevation'talren as indicated byline 5 5 on Fig. l;

Fig. 6 is an enlarged .end view taken Online 6*-6 on Figj2; a

- Fig. 7 is a sectional View taken as indicated by line 7--7 on Fig. 5'; p Y

A Fig. 8 'is' an enlarged, .detailedA sectional view taken as indicated by line -e--Sonvlv` Fig.2; v l ,i n v Fig. 9 is an enlarged View of one end of the mold showing the parts completely assembled. Y I

tionincludes, generally, a body 10, forming the main part of the mold, a reinforcing structure 11 to be arranged in the body-so that it is cast in the `finished product, a core The construction provided by this inven- 12 tobe arranged in the body ,to form a cen--' tral longitudinalopening through thefinished product, a core mounting or carrying plate 13 fixed to one end of the core land vadapted to be connected to one 'endof'the vmold body, a cover plate lt'adapted to be applied to the otherend of the body, mounting plates 15 and 16 to be applied to the ends of thev body to facilitate .mountingy of the 10ov f structure in an operating machine, or 'the l I like, projecting trunnion 17 on the body 10,

and a sling 18 for engaging the trunnions.

The'body 10 is a hollow, elongate structure having its interior finished or fashioned to give the desired shape or contour to the iinished product.v In view of the fact that the present invention is particularly suited to' molds for posts or columns, I have disclosed a body 10l adapted to form an ornamental post suitablefor use in a lighting standard or electrolier. It is to be understood, of course, that the body 10 kmay be of anyV desired proportions and that theinterior of the body may be made to give the finished product any desired design. The body 10 is of sectional construction, that is, it is divided along longitudinal lines into a plurality of sections. lThe particular body illustrated is divided into three longitudinal sections A, B and C. The abutting edgesof all joining sections are provided with outwardly projected flanges 2O to receive bolts 21, or the like, whereby the sections are connected or held together in an assembled position. In practice, suitable reinforcing flanges or ribs 22 can be provided on the exterior of the body sections to strengthen or reinforce them. I have found it practical to forni the body sections of aluminum and to connect the sections by means of bolts 21, spaced along the body substantially, as shown in Figs. 1 and 2 of the drawing.` The body 10 illustrated in the drawings, being designed to form an ornamental post or electrolier standard,`is differentat its two ends, oneend being what I may term the base end, and the other end the headend. The body' is larger at the base end than at lthe head end.

The reinforcementv 11 to be cast or embedded in the finished product may vary in design and construction, it being preferred to form it of a plurality of longitudinal rods 23,

Y one or more transverse ties 2a joining the rods, and one or more spacing rings 26 operable to hold the rods 23 spaced apart and Vin the desired position in the body being molded. Inthe construction illustrated, the rods 23 are provided' at the base end of the structure with foot brackets 27 having outwardly projecting parts 28 adapted to be attached directly to the base endvof the body 10 and to project from the finished product as a means .for attaching the product to a foundation, or

the like. The brackets 23 are preferably formed of comparatively heavy stock and are fixed, for instance welded, to the rods Vwhich may be lighter. The rods 23 may be suitable reinforcing stock` for instance, rods square 1n cross section and twisted longitudinally. In accordance with my invention, the

base end 29 of the body 10 is provided with recesses or sockets 30 to receive the projectving parts 28 of the brackets. 'Ihe projecting parts v28 are provided with openings 31 adapted to receive mounting bolts projecting from the foundation on which the post is to be mounted. For the purpose of attaching the brackets to the body of the mold, I arrange suitable bolts 32 through the openings 31 in the parts 28 and through openings 33' 32, and therefore I provide counter-sunk.

Washers 35 to engage the parts 28 and fit the openings 31 to receive the heads of the bolts 32.V This construction is clearly illustrated in Fig. 3 of the drawing. The longitudinal rods 23 of the reinforcement being thus attached to the base end of the body are definitely and positively held in position at this end of the body. The rods 32 extend longitudinally through the body to the head end thereof Where they, are guided in the proper position bythe cover plate 111, 'as will be hereinafter described.

- The guide ring 26 is an annular member fitting around thecore 12 and having open. ings which pass the rods 23. The rods 23 in thus engaging the ring 26 are held in definite spaced relation and in the desired posit-ion to be cast in the finished product. It is to be understood that any desired number of spacing rings may be provided in the reinforcement and "that they may be located at the desired ,point or points longitudinally ofthe-structure. The transverse more wires wrapped around the several rods 23 in a manner such as I have illustrated in Figs. 1 and 2 of the drawings.

The core 12 is provided to form a central longitudinal opening through the post and to engage the guide ring ,of the reinforcement so that the reinforcement is definitely held in position in the body. The core is carried by or fixed to the core carrying plate 13 and is proportioned and shaped to form the desired opening in the post. In accordance with standard practice, it is desired to provide an engaged opening in the base of the post, therefore the core has a large part 38 at its base end. Acomparatively long, slightly tapered part 39 projects from the enlarged part 38 to the head end of the mold to form the desired opening through the post. The parts 38 from the cast post. In practice, the plug l() is formed of wood, and is located in the part 39 of the core somewhat inward of the head end thereof.

The core carrying plate 13 is permanently attached to the large or base part 38 of the core and is in the form of a flat plate projectingradially from the base end of the core to engage or seat on the base end 29 of mold body 10. The plate 13 and iange part 34 of the body are provided with registering openings to `receive bolts 43 whichoperate to connect the plate 13 to the base end'of the mold.. These openings4 in the plate 13 and body of -the mold are, of course, related so that the bolts 43 connect the plate 13 with the mold body so that the base end of the core is held in the desired position in the baseV end of thel Y terial to be molded can be introduced into the body. These openings 44 are clearly illus` body by means of screws 45, or the like. In the preferred construction, the head ends of the screws 45 are counter-sunk inA the cover vplate 14 so that they do not project therefrom.

In accordance wit my invention, the cover plate 14 has means 'for guiding the head ends of the reinforcement rods 23. In the preferred construction, the'cover plate is provided with sockets 47 which slidably or freely receive the head ends of the reinforcement rods 23. In practice, it is usually `desired to have the head ends of the reinforcement rods threaded and projecting from,l the head end of the post as a means of attaching other'parts or iixtures to the post. In the drawings, I have shown the threaded projecting ends of the reinforcement rods extending into the sockets 47 to be guided orv supported in the desired position at the head end of the struc- 'and the molded matter.

ture but'not held to be under any undue or unnatural strain. By allowing the head ends of the rods 23 to extend freelyinto thel sockets 47, the rods 43 are held or spaced definitely Y in the structure but are not strained. This is an important feature'of my invention, as it allows the reinforcing rods 23 to be set or cast in the finished product under natural conditions, thus assuring a proper and permanent .bond between the molded material and rods.

If the reinforcing rods vare put under a false strain, which strain is released after .the post is formed, there'is a tendency for a weakened condition, as there is immediately a tendency to break the bond between the rcds The cover plate 14 is further provided with vmeans for holding the head end of vthecore centrally or in the ,desired position in the head end ofthestructure.-` This means may include a projection 48 onthe inner side of the plate 14 adapted to extend or fit into the end of the core part 39.' The projection 48 is preferably tapered tofacilitate guiding the head end of the core onto it and may be pro portioned to accurately fit the head end of the'y core when the parts arefully assembled as shown in Fig. 9. In handling the mold, it is customary to insert the core after the reinforcement has been'placed and 1n order to faf Y cilitate theproper positioning ofthe core on the projection 47 as the core is inserted from the base endof the body, I provide a central opening 50 through the cover or through the projection 48 so that a guide rod 51 vcan be inserted through the cover to project inwardly from the projection 48 andreceive the head end of the core as rshown in'Fig.- 1, and guide `it onto the projection 48. Whenthe core is in place, the guide rod 51 can be removed and t-he hole 50 closed by lsuitable plug 52. In the preferred construction, the cover 14 is formed 'of two parts, a sheet metal plate and a casting 53 provided with the sockets 47 and the projection 48. In this case, the plate is, of course, provided with suit-able openings to register with the partsv of the casting. as shown in Fig. 9. I f Y l The plates 15 and 16 are applied to the ends of the structure over the plates 13 and 14, .re-y spectively, and are adaptedto fit or accommodate the apparatus or machines in which the mold is to be handled. In the particular case illustrated, the plate 15is adapted to be secured vto the base endv of the body over plate ,13 through-boltsiO, and is provided with a 'central socket 61 to receive a spindle or` center of a suitable' mold handling'y machine. The plate 15, in accordance with my invention, is made to cover the openings 44 in the plate 13 and in practice is appliedto the structure after the mold has been completely filled through the openings 44.

The'plate 16 is applied to the head end of the mold-over the p late 14 and is secured by.-

means of bolts 62. The plate 16 is recessed to Y accommodate the projecting parts of cover 14 and is provided with a central socket 65 to receive a spindle or part of a mold handling machine. In the case illustrated, socket65 is madepolygonal to receive a correspondingly shaped drive member, or the like, of a` mold handling machine.

The means 17 provided to receive the sling 18 includes trunnions 17 projecting fromr dialmetrically opposite sides ofthe body and .lo-

cated at approximately the center of balance ture is filled. j In the construction illustrated, the trunnions 17 are provided on platesf7l secured to the mold sections in a manner such sling 18 provid-ed yto handle the mold through vor gravityjofthe structurewhenthe struc- "as illustrated in Fig."8 of the drawings. The

supported through a suitable fitting 81 and chains 82, or the like, extending from the end beam 80 and provided at their lower ends with rings S3 to be applied to the trunnions 70.

` isthen arranged in place and the base end of the reinforcement made secure with the base end of the body through the bolts 82. The core is then arranged in place, which operation is facilitated by the guide rod 51. With the core in place and the plate 13 secured to the base end of the body, the mold is in condition to be filled. When the mold is full and the plates '15 and 1 are applied, the mold is ready to be handled by a suitable machine or in whatever manner may be desired. t is apparent plate 16 can be applied either before orl after the mold is filled. f

f Having thus described the invention, what I claim is: Y y

1. A' post mold including an elongate sectional body, a cover for `one end of the body, a core, a plate carrying the core and adapted to be attached tothe other end of the body, the plate having an opening to admit material into the body, and a mounting plate to be applied over the core carrying plate and close the opening therein.

2. A post mold including an elongate sectionalbody, a cover for one end of the body, a core, and a plate. carrying the core and adapted to be attached to the other end of the body so that the core extends through the body to the cover, the core and cover having inter-engaging parts whereby the core is guided at the cover.

8. A post mold including an elongate sec-r tional body, a cover for one end of the body, a core, an inwardly extending projection on the cover, and a plate carrying the core and adapted to be attached to the other end of the body so that the core extends through the body to the cover, the core engaging the projection to be held in place in the body.

4t. A post mold including an elongate sectional body, a cover for one end of the body, a core, an inwardly extending projection on the. cover, and a plate carrying the core and adapted to be attached tothe other end of the body so that the core extends through the body to the cover, the core having a socket in its end to receive the projection.

5. A post mold including an elongate lsectional body, a cover for one end of the body,

an inwardly extendingprojection on the,L

cover, there being an opening `through the projection through which amember vcan be arranged to project into the body, a core, and

a plate carrying the core and adapted to be attached to the other end of the body, the core having a socket in its end to receive the projection. y y y y 6. A post mold including a sectional body, a cover to be attached to one end of the body, j a core, a plate carrying the core and adapted to be attached to the other end of the body so that the core extends through the body and engages the cover, and mounting plates to be attached to the ends of the body over the cover. and core carrying plate.A

7. A post mold including a sectional body, a cover to be attached to one end of the body, a core, a plate carrying the coreand adapted to be attached to the other end of the body so that the core extends through the body and engages the cover, the plate having an opening to admit material into the body, and mounting plates to be attached to theends of the body over the cover and core carrying plate, the opening in theicore carrying plate being closed by the mounting plate arranged over the core carrying plate.

8. A post moldincluding a body, a cover for one end of the body and having a plurall ico end of the body and extending freely into the l sockets, and means for closing said other end of the body.

10.l A post mold including a body, a cover for one end of the body and having'a plurality of sockets', a reinforcement having longitudinal parts attached to the other end of the body and extending freely into the sockets, a core, and a plate carrying the core and attached to saidother end of the body over the reinforcement parts.

11. A post mold includingabody, a cover for one end of the body and having a plurality of sockets, a reinforcement having longitudinal parts attached to the other end of the body and extending freely into the sockets, a core, and a plate carrying the core and attached to said other end of the body over the reinforcement parts, thel plate having an opening to admit` material into the body-` t 12. A post mold including a body, a cover for one end of the body and having a plurality of sockets, a reinforcement having longitudinal parts attached to the other end of the body and extending freely into the sockets, a core, a plate carrying the core and attached to said other end of the body over the rein-- body over the coverv and core carrying plate.

13. A post mold including a body, a cover for one end of the body and having a plurality of sockets, a reinforcementhaving longijtudinal parts attached to the other-end of the body and extending freely into the Sockets, `a core, cooperating parts on the cover and core whereby the core is supported at the cover, and a plate carrying` the core and attached to said other end of the body over the reinforcement parts.

14. A post mold including a body, a cover for one end of the body and having a plurality of sockets, a reinforcement having longitudinal parts attached to the other end ofthe body and extending freely into the sockets, a core having al socket in its end, a projection on the cover to extend into the socket in the core, andy a plate carryingl the core and attached to said other endof the body over th reinforcement parts. Y

l5. A for one end of the body and having a plurality of sockets, a projection on vthe' cover, a core having a socket: at one end to receive the projection, a plate att-ached to the other end of the core and secured to theother end of the body, the plate having an opening to admit material into the body, a reinforcement having longitudinal parts extending freely into the sockets, brackets fixed to said parts and attached directly to said other end of the body under the plate, and a spacing ring engaging the core and supporting said parts intermediate their ends, and mounting plates applied over the cover and core carrying plate. f

In Witness that I claim the foregoing Iv post mold including a body, a coverv have hereunto subscribed my name this 6th u day of December, 1927.

i WESTERN UNDRWooD. 

